期刊
CHEMISTRY OF NATURAL COMPOUNDS
卷 39, 期 3, 页码 285-288出版社
CONSULTANTS BUREAU
DOI: 10.1023/A:1025478720459
关键词
Onopordum acanthium L.; two-dimensional spectrum; PMR; C-13 NMR; HSQC; HMBC; COSY; TOCSY; ROESY spectra
Crystalline taraxasterol and its acetate were isolated for the first time from Onopordum acanthium. Two-dimensional COSY, HSQC, and HMBC NMR experiments were carried out for complete assignment of signals in the PMR and C-13 NMR. Chemical shifts of stereochemically important methyl C atoms C-28 and C-29 were measured.
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